lawondyss/parex

Lightweight PHP library for parsing terminal commands using PHP native options processing

1.2.0 2025-04-02 16:43 UTC

Requires

• php: ^8.2

Requires (Dev)

• friendsofphp/php-cs-fixer: 3.69
• phpstan/phpstan: ^2.1
• tracy/tracy: ^2.10

MIT

• Ladislav Vondráček

• php
• cli
• parser
• shell
• terminal
• command-parser

README

Parex is a lightweight and flexible PHP library for parsing command-line arguments. It simplifies the process of defining required, optional, and flag options, and provides a clean and intuitive way to access the parsed values.

Features

• Easy Definition: Define required, optional, and flag options with a simple fluent interface.
• Default Values: Set default values for optional arguments.
• Multiple Values: Handle options that can accept multiple values.
• Flexible Result Handling: Supports both dynamic and statically defined result classes.
• No Undefined Properties: Prevents access to undefined properties on result objects.

Installation

You can install Parex via Composer.

composer require lawondyss/parex

Usage

Parex allows you to define required, optional, and flag options. You can then parse the command-line arguments and access the parsed values through a result object.

Basic example (DynamicResult)

Basic definition:

$dynamicResult = (new Parex())
    ->addRequire(name: 'env', short: 'e')
    ->addOptional(name: 'scopes', short: 's', multiple: true)
    ->addOptional(name: 'currency', default: 'CZK')
    ->addOptional(name: 'onlyAccount')
    ->addFlag(name: 'sandbox')
    ->parse();

Command: php examples/simple.php -e "./.env" --sandbox --scopes=last:month --env="../.env" -s="last:week" -stoday

Dump:

Lawondyss\Parex\Result\DynamicResult
    env: './.env'
    scopes: array (3)
       0 => 'last:month'
       1 => 'last:week'
       2 => 'today'
    currency: 'CZK'
    onlyAccount: null
    sandbox: true
    POSITIONAL: array (0)

Try simple.php example with dynamic result for command arguments.

Advanced example (TypedResult)

Definition with own class of result.

$scriptResult = (new Parex())
    ->addRequire('env', 'e')
    ->addOptional('scopes', 's', multiple: true)
    ->addOptional('currency', default: 'CZK')
    ->addOptional('onlyAccount')
    ->addFlag('sandbox')
    ->parse(ScriptResult::class);

Command: php examples/typed.php -e "./.env" --sandbox --scopes=last:month --env="../.env" -s="last:week" -stoday

Dump:

ScriptResult
    env: SplFileInfo
       path: './.env'
    scopes: array (3)
       0 => Scope::LastMonth
          value: 'last:month'
       1 => Scope::LastWeek
          value: 'last:week'
       2 => Scope::Today
          value: 'today'
    currency: Currency::CZK
       value: 'CZK'
    onlyAccount: null
    sandbox: true

Try the example typed.php, which shows how to define own result class (ScriptResult) with types and enums.

ArgvParser

Default GetOptParser does not support positional arguments suitable for custom commands and ignores unknown options. ArgvParser can be used to support these things.

$dynamicResult = (new Parex(new ArgvParser()))
    ->addRequire(name: 'env', short: 'e')
    ->addOptional(name: 'scopes', short: 's', multiple: true)
    ->addOptional(name: 'currency', default: 'CZK')
    ->addOptional(name: 'onlyAccount')
    ->addFlag(name: 'sandbox')
    ->parse();

Command: php examples/argv.php command sub -e "./.env" --sandbox --scopes=last:month --env="../.env" -s="last:week" -stoday

Dump:

Lawondyss\Parex\Result\DynamicResult
   env: '../.env'
   scopes: array (3)
      0 => 'last:month'
      1 => 'last:week'
      2 => 'today'
   currency: null
   onlyAccount: null
   sandbox: true
   POSITIONAL: array (2)
      0 => 'command'
      1 => 'sub'

Result classes

Parex provides two base result classes:

• DynamicResult: A dynamic result class that allows you to access parsed values as properties. It's suitable for simple use cases where you don't need to define a specific result structure.
• DefinedResult: An abstract class that you can extend to create your own statically defined result classes. This allows you to define specific properties with types and add custom logic.

Contributing

Contributions are welcome! Please feel free to submit a pull request or open an issue.

License

This library is open-sourced software licensed under the MIT license.